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On Modeling Bivariate Wiener Degradation Process

机译:关于双变量维纳降解过程的建模

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摘要

Modern products are usually designed with high reliability and have complex structures, and degradation analysis of the complex systems with two or multiple performance characteristics is still a challenge. In this paper, we propose a new bivariate degradation model based on the Wiener process. There are three main merits of the proposed model: it can describe the common factor affecting the degradation of the two performance characteristics and unit-to-unit variation simultaneously, the reliability functions of the system and the remaining useful life of the system have analytic forms, and the model parameters and the missing values can be estimated by the Bayesian method and data augmentation. The simulation study and data analysis show that the Bayesian method and the proposed model have satisfactory performance.
机译:现代产品通常以高可靠性设计并具有复杂的结构,并且对具有两个或多个性能特征的复杂系统进行降级分析仍然是一个挑战。在本文中,我们提出了一种基于维纳过程的新的双变量降解模型。所提出模型的三个主要优点:可以同时描述影响两个性能特征退化和单位变化的共同因素,系统的可靠性函数和系统的剩余使用寿命具有解析形式。 ,并且可以通过贝叶斯方法和数据扩充来估算模型参数和缺失值。仿真研究和数据分析表明,贝叶斯方法和所提出的模型具有令人满意的性能。

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